May I recommend this declaration be removed from Test/XForms1.1/Edition1/Chapt06/6.1/6.1.7/6.1.7.a.xhtml
The test is for p3ptype and the declaration is not germane.
<?xml version="1.0" encoding="ISO-8859-1"?>
<xhtml:html ...
xsi:schemaLocation="http://www.w3.org/2002/xforms xforms.xsd
http://www.w3.org/2001/xml-events xml-events-attribs-1.xsd">
Leigh.